1999 Volume 1999 Issue 4 Pages 419-424
A new type of an asymmetric electro-pneumatic servo valve which is used as a hardware compensation of the system to make fast the response speeds is developed and studied. To develop a very high speed system, such as pneumatic force control system for a spot welding machine an asymmetric servo valve which downstream port width is two times of the upstream one is expected as a hardware direct compensation to compensate the system and to equalize the response speeds. The asymmetric electro-pneumatic newly designed servovalve was investigated here to provide asymmetric control flows as an important component in the pneumatic pressure control system for achieving high speed control. This paper describes the characteristics of this asymmetric valve, and we assured the effectiveness of this valve by the experiment.
